Thx. I had several hangs since last update, but I couldn't tell if it was my gsak file or not. Actually had to resort to my phone after while today...what a pain. Hopefully this update gets it back for me.

My upgrade went without a hitch. Your mileage may vary. Each update for me since 3.4 has been really good and has added stability and useful features. If you haven't been running basecamp/webupdater and you are a Garmin GPSMAP 62 owner you may want to take a look. System performance and utility has been significantly improved.

I upgraded to 4.5 and then I had to go through and reset the order of my screens, and settings the way I had them before.
Not a big hassle, but unexpected.
I probably had to do this after the last update, but my memory is shorter than it used to be.